Finding the Fourth Proportional to 2,112.56, 2,912.76 and 1,490.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.56 : 2,912.76 = 1,490.48 : x
2. Step 2: Convert to fraction form
   2,112.56/2,912.76 = 1,490.48/x
3. Step 3: Cross multiply
   2,112.56x = 2,912.76 × 1,490.48
4. Step 4: Simplify right side
   2,112.56x = 4,341,410.52
5. Step 5: Solve for x
   x = 4,341,410.52/2,112.56
6. Step 6: Final answer
   x = 2,055.05